This week I switched from a Sprint 4G phone to a T-Mobile 5G.
Connectivity is significantly better, specifically when I am deep inside my apartment building or in an elevator down to the underground garage.
I got a new magic box gold with voice amp from the magic box gen 2. I could not get it to pick up a signal. The gen 2 showed 3 bars. I called sprint and they said the technology the gold uses is not in my area. The reactivated the gen 2. Now I can not get it to pick up anywhere. Makes it to 39% and reboots. I've even tried it on the back porch for testing where my phone gets 2 bars of LTE. Weird.
Got my fastest speeds on T-Mobile 5G yet, today. This is on mmWave. I have a feeling that the reason I never connect to n41 is because I'm either close enough that I can connect to n261 or so far that I can only connect n71.
Edit: The site has Band 2/12/46(LAA)/66, and n41 installed but it doesn't have Band 71/n71. T-Mobile really confuses me sometimes.